Question: What position did Jean Chrétien hold before being replaced by Gerald Regan?
Paraphrase: Jean Chrétien was replaced by Gerald Regan in what position?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q128543 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P1366 wd:Q247524 }